| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Solid-State Phase Transformations and Microstructural Evolution
|
| Presentation Title |
A Comparison of the Microstructure in Blown Powder Deposition Inconel 718 for Various Heat Treatments |
| Author(s) |
Giancarlo Joseph Puerto, Chris Hill, Judy Schneider |
| On-Site Speaker (Planned) |
Giancarlo Joseph Puerto |
| Abstract Scope |
Additive Manufacturing (AM) provides a low-cost method to fabricate near net shape complex parts, such as rocket combustion chambers and rocket turbomachinery impellers, in one process. However, the nature of printing a part layer by layer can result in non-homogeneity of the microstructure due to the repeated heating and cooling gradients. To mitigate undesirable microstructures, heat treatments are being developed to reduce residual stresses, increase homogeneity, and promote desirable phase formation. As these heat treatments are based on those developed for wrought Inconel 718, the response of AM materials to similar heat treatments is unknown. In this study a rocket turbopump inducer was fabricated using blown powder direct energy deposition (DED). This inducer was sectioned, and various heat treatments were applied in order to evaluate the microstructural evolution. The resulting microstructures were the basis for optimizing the heat treatment processes for blown powder DED Inconel 718 material. |
| Proceedings Inclusion? |
Planned: |